2001-2002 Bentley EXP Speed 8

Images courtesy and copyright Bob Chapman @ Autosport Image
Text copyright Michael J. Fuller

The most important issue for designing an effective nose diffuser is providing for relatively unobstructed flow through the diffuser and out the car.  In 2001 Bentley segregated the air coming out of the front wheel arch from that of the diffuser. 
In 2002, the segregating plate was removed and the wheel well exit was combined with the air coming from the front diffuser.

©Copyright 2001, Michael J. Fuller